Partial factors for fatigue loads in the Eurocode system for road bridge design

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In the Eurocode system, for fatigue design of bridges, the recommended partial factor for fatigue traffic loads is set to 1. In this paper, the adequacy of this approach is investigated by performing a reliability analysis on two types of welded joint in a main girder of a steel motorway bridge. For this purpose, a weigh in motion measurement dataset belonging to a main Dutch motorway has been compared with the fatigue load model 4 of Eurocode EN 1991-2 with respect to the stress spectrum and the fatigue damage of two structural steel de-tails. Several structural schemes have been considered to study the effect of the shape and length of the influ-ence line. The distributions of the stochastic variables such as dynamic amplification, accuracy of the structur-al model, and future traffic trends have been estimated or taken from literature. Partial factors for fatigue loads have then been calibrated in such a way that the target reliability is obtained. The influence of each sto-chastic variable on partial factors has been studied by derivation of the sensitivity factors. The results show that a considerably higher fatigue partial factor is required for fatigue loads on road bridges than the value of 1 currently recommended in EN 1991-2.
Originele taal-2Engels
TitelSafety and Reliability - Safe Societies in a Changing World
SubtitelProceedings of ESREL 2018
RedacteurenCoen van Gulijk, Stein Haugen, Anne Barros, Jan Erik Vinnem, Trond Kongsvik
Plaats van productieLondon
UitgeverijTaylor and Francis Ltd.
HoofdstukStructural Reliability
Pagina's2339-2345
Aantal pagina's7
Uitgave1st
ISBN van geprinte versie978-0-8153-8682-7
StatusGepubliceerd - 15 jun 2018
Evenement2018 European Safety and Reliability Conference (ESREL 2018) - Trondheim, Noorwegen
Duur: 17 jun 201821 jun 2018
https://www.ntnu.edu/esrel2018

Congres

Congres2018 European Safety and Reliability Conference (ESREL 2018)
Verkorte titelESREL 2018
LandNoorwegen
StadTrondheim
Periode17/06/1821/06/18
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    Hashemi, S. B., Maljaars, J., & Snijder, H. H. (2018). Partial factors for fatigue loads in the Eurocode system for road bridge design. In C. van Gulijk, S. Haugen, A. Barros, J. E. Vinnem, & T. Kongsvik (editors), Safety and Reliability - Safe Societies in a Changing World: Proceedings of ESREL 2018 (1st redactie, blz. 2339-2345). Taylor and Francis Ltd.. https://www.taylorfrancis.com/books/9781351174657